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(Official NBA weight is 22 ounces (avoirdupois) = 623.7 grams.)

High School basketballs may be lighter: 20 ounces -

According to Rule 1 Section 12 Article 1e. parts 1 and 2, "The weight shall be within a minimum of 20 ounces to a maximum of 22 ounces for high school boys competition and within a minimum of 18 ounces to a maximum of 20 ounces for high school girls competition."

Basketballs actually come in four sizes

  • Size 3: circumference 22 to 22.5 inches, weight 10-11 ounces, recommended for small children (age 5-8). It has a diameter of 7 to 7.16 inches and a radius of 3.5 to 3.58 inches
  • Size 5: circumference 27.25 to 27.75 inches, weight 16.6-18 ounces recommended for boys and girls under 12 years old (junior league). It has a diameter of 8.67 to 8.83 inches and a radius of 4.34 to 4.42 inches.
  • Size 6: circumference 28.5 to 29 inches, weight 20 ounces, recommended for boys and 12-14 and girls and women age 12 and up. This is the official game ball for women's high school, university and professional Basketball. It has a diameter of 9.07 to 9.23 inches and a radius of 4.54 to 4.62 inches.
  • Size 7: circumference 29.5 to 30 inches, weight 22 ounces, recommended for men and boys age 15 and up. This is the official game ball for men's high school, university and professional basketball. It has a diameter of 9.39 to 9.55 inches and a radius of 4.7 to 4.77 inches.

29.5 ounces
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6y ago
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11y ago

1.25 pounds or 20 ounces for the Spalding NBA game ball.

I was told of this specification by Spalding customer service.

The NCAA allows 20 to 22 ounces for men and 18 to 20 ounces per ball in women's

competition.

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15y ago

An NBA basketball weights 22 ounces

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16y ago

22 oz. in NCAA Men's Basketball

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15y ago

try asking that on Yahoo answers

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Q: What is the official weight of an official basketball?
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